[Redshifted]

Hello, in the last month my 07 335I has been experiencing power loss. It's happened 3-4 times intermittently and only while on the expressway. I first get a yellow trans is heating up light and then 2 seconds later a red trans light comes on and by then I am slowing down and not by choice. The pedal is pressed but the car just loses speed but the rpm stay up there until I start shifting. I have to pull over and turn the engine off. I wait a little bit and then turn it back on and its working ok. Prior to this happening the engine was misfiring and when it was under load the engine would stutter, if that makes sense. Changing the plugs and coils fixed that problem but a couple weeks later I have the power loss problem. I took it to the dealer and was told the water pump was failing (+$1100 to fix) and the oil gasket housing is leaking ($+1000). Does the failing water pump explain the power loss problem? My fiancee and I can't seem to make that connection, maybe we are missing something? Thanks for your input.

Beth

[MysticRob]

Originally Posted by Redshifted

...The pedal is pressed but the car just loses speed but the rpm stay up there until I start shifting.

What code(s) did the dealership paperwork show?
Auto or manual tranny?
More info please...
Makes little sense you're describing a transmission problem and saying you were told the dealership says it's the water pump.

[kfrazie1]

A water pump failure will cause an almost complete loss of power. Car will move like 5mph. When water pump fails, you get yellow temp light followed by red temp light a a minute or 2 later. The radiator fan also starts running.

[BM3Rrrr]

Originally Posted by Redshifted

Hello, in the last month my 07 335I has been experiencing power loss. It's happened 3-4 times intermittently and only while on the expressway. I first get a yellow light and then 2 seconds later a red light comes on and by then I am slowing down and not by choice. The pedal is pressed but the car just loses speed but the rpm stay up there until I start shifting. I have to pull over and turn the engine off. I wait a little bit and then turn it back on and its working ok. Prior to this happening the engine was misfiring and when it was under load the engine would stutter, if that makes sense. Changing the plugs and coils fixed that problem but a couple weeks later I have the power loss problem. I took it to the dealer and was told the water pump was failing (+$1100 to fix) and the oil gasket housing is leaking ($+1000). Does the failing water pump explain the power loss problem? My fiancee and I can't seem to make that connection, maybe we are missing something? Thanks for your input.

Beth

Maybe the yellow trans light you are speaking of is confused with the engine overheating icon??

What you describe in bold is exactly what happened when my water pump failed.